One vertex per element, one color per generator, with an edge from x to x·s.
(3,4)(6,7)(9,10)(11,15)(12,16)(13,14)(17,18,20,22)(19,26,27,24)(21,23,29,25)(28,31,32,30)(1,2)(3,7)(4,6)(5,8)(10,14)(11,12)(18,22)(23,25)(24,26)(30,31) involution — undirected(1,3,5,4)(2,6,8,7)(9,11,13,12)(10,15,14,16)(18,23)(21,29)(22,25)(24,30)(26,31)(28,32)(1,4,5,3)(2,7,8,6)(10,14)(15,16)(17,19)(18,24)(20,27)(21,28)(22,26)(23,30)(25,31)(29,32)(2,8)(6,7)(9,12,13,11)(10,15,14,16)(18,22)(19,27)(23,25)(28,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.